Measurement of prompt $D^0$ meson azimuthal anisotropy in Pb-Pb collisions at $\sqrt{{s}_{NN}}$ = 5.02 TeV

The collaboration
Phys.Rev.Lett. 120 (2018) 202301, 2018.

Abstract
The prompt D$^0$ meson azimuthal anisotropy coefficients, $v_2$ and $v_3$, are measured at midrapidity ($|y| < 1.0$) in PbPb collisions at a center-of-mass energy $\sqrt{s_\mathrm{NN}} =$5.02 TeV per nucleon pair with data collected by the CMS experiment. The measurement is performed in the transverse momentum ($p_\mathrm{T}$) range of 1 to 40 GeV/c, for central and midcentral collisions. The $v_2$ coefficient is found to be positive throughout the $p_\mathrm{T}$ range studied. The first measurement of the prompt D$^0$ meson $v_3$ coefficient is performed, and values up to 0.07 are observed for $p_\mathrm{T}$ around 4 GeV/c. Compared to measurements of charged particles, a similar $p_\mathrm{T}$ dependence, but smaller magnitude for $p_\mathrm{T} <$6 GeV/c, is found for prompt D$^0$ meson $v_2$ and $v_3$ coefficients. The results are consistent with the presence of collective motion of charm quarks at low $p_\mathrm{T}$ and a path length dependence of charm quark energy loss at high $p_\mathrm{T}$, thereby providing new constraints on the theoretical description of the interactions between charm quarks and the quark-gluon plasma.

• #### Table 1

Data from Figure 2

10.17182/hepdata.78930.v1/t1

Prompt D0 meson v2 in 0-10 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...

• #### Table 2

Data from Figure 2

10.17182/hepdata.78930.v1/t2

Prompt D0 meson v2 in 10-30 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...

• #### Table 3

Data from Figure 2

10.17182/hepdata.78930.v1/t3

Prompt D0 meson v2 in 30-50 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...

• #### Table 4

Data from Figure 2

10.17182/hepdata.78930.v1/t4

Prompt D0 meson v3 in 0-10 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...

• #### Table 5

Data from Figure 2

10.17182/hepdata.78930.v1/t5

Prompt D0 meson v3 in 10-30 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...

• #### Table 6

Data from Figure 2

10.17182/hepdata.78930.v1/t6

Prompt D0 meson v3 in 30-50 centrality percentile in midrapidity (|y| < 1.0) in PbPb collisions at 5.02 TeV. The...